Finding the Fourth Proportional to 31,513.65, 43,488.28 and 17,173.61

Step by Step Solution

1. Step 1: Write the proportion equation
   31,513.65 : 43,488.28 = 17,173.61 : x
2. Step 2: Convert to fraction form
   31,513.65/43,488.28 = 17,173.61/x
3. Step 3: Cross multiply
   31,513.65x = 43,488.28 × 17,173.61
4. Step 4: Simplify right side
   31,513.65x = 746,850,760.29
5. Step 5: Solve for x
   x = 746,850,760.29/31,513.65
6. Step 6: Final answer
   x = 23,699.28